The Sickle-billed Vanga is a species of bird in the vanga family Vangidae. It is monotypic within the genus Falculea. It is endemic to Madagascar. Its natural habitats are tropical dry forests and tropical dry shrubland.The Sickle-billed Vanga is the largest of the vangas, measuring 32 cm in length and weighing 106–119 g . The most striking feature is the bill, which is strongly decurved and measures 77 mm and is blue-grey fading to ivory at the tip. The plumage is striking, with a white head, breast and belly and the back, wings and tail being black with a blue sheen. The iris is brown and the orbital ring around the eye is black. The legs are strong and coloured dark grey to pale blue. There is no sexual dimorphism. Juveniles are similar to adults but the black feathers on the back and wings are tipped with buff.